[Q] Unlocked S5, MM#3 error. Any input appreciated. - Galaxy S 5 Q&A, Help & Troubleshooting

So I'm kind of double posting from this: http://forum.xda-developers.com/galaxy-s5/help/unlocked-mms3-att-help-t2953226
My S5 was originally AT&T, the phone has been unlocked and with a clean IMEI yet if I put a ATT Straight Talk sim inside, it gives the error MM#3. I've tried this with both active and non active SIMS. The Tmobile SIM seems to work, but don't have one with service. Using Tmobile here is not even an option, 0 service. Would flashing PDA.md5 with odin help? I'm not even sure with the PDA file does, just saw in another thread with 0 explanation afterwards. Any input here is greatly appreciated.
http://forum.xda-developers.com/att-galaxy-s5/help/unlocked-s5att-sim-allowed-mm3-t2836424
Here's the link to the other thread.

Related

[Q] Rooted & unlocked i337 asking to insert sim

Hoping someone can help me figure this out.Created a new topic because it seems a bit different from the other "no sim" topic.
I have an i337 on MF3 that was rooted and unlocked using jortex's method and chainfire's region unlock.
http://forum.xda-developers.com/showthread.php?t=2387577
http://forum.xda-developers.com/showthread.php?t=2470551
I used it on Tmobile's network for about 16hrs without problem, then it suddenly started showing emergency calls only and asking to insert sim. I've place the tmobile sim in another phone and it worked fine, also put an unactivated AT&T sim in the S4 and it sees it. The phone is still booting up with the samsung custom screen. Any ideas on how to fix?
Thanks in advance.

Cant use Net10 SIM with new firmware.

I used Odin to flash a NC2 firmware. I found the firmware in the thread will the leaked KK files. After flashing that firmware ive been unable to connect to Net 10 service with either a ATT or Tmobile SIM card. If i put the Verizon SIM in, i almost immediately see 3G is available. I flashed a second (updated) firmware, and i still have this issue.
Is this a known issue? Anyone else have this issue? Im using BigginsROM cause flashing Hyperdrive causes a black screen when booting. I presume its cause HyperDrive isnt on NC2/NC4 yet. I hope this isnt permanent cause itd defeat the entire purpose of spending $900+ on the phone and accesories.
Any info/help would be greatly appreciated. If ive merely derped something feel free to let me know.
First this firmware: http://forum.xda-developers.com/showthread.php?t=2528707
Then this firmware: http://forum.xda-developers.com/showthread.php?t=2787627
I installed a SIM card info app. The app says that the phone is network locked to Verizon. The phone number that is showed is associated with the Net 10 AT&T SIM. Still says network locked and SIM operator is Verizon.
While further researching the issue i found that the servce menu reports "Network: UNBLOCK." The conclusion is that that means the phone is SIM locked. How in the world would i have managed to lock my phone?
While even further researching the issue i found that it might be the NC4 ROM that i flashed when i was having problems getting the KK leak to boot.
Edit.

[Q] Unlocked, MMS#3 on AT&T help

I have a galaxy S5 on AT&T that I'm trying to use a straight talk sim in. (Att towers) whenever a sim is inserted into the phone I get "Sim not allowed mm#3". I used a reputable service (cell unlocker) to unlock the device. The IMEI comes up clean as well. I've also changed the APN settings, but it won't connect. I'm trying to port from a galaxy s3.
I would also like to quickly add that the t mobile straight talk sim works just fine, but using that is not an option as the service is atrocious.
Another thing, the ATT sim works in a galaxy S4 with no issues. They are both sims for straight talk. Any help is really appreciated, this is baffling me.
Just went into the service menu with *#0011# and in the debug menu i can't actually see a MM reject cause. CARD_ERROR: Unknown and PERSO_FEATURE: UNSUPPORTED are the only relevent info i see here. The phone has been unlocked, is there a way to flash the service menu with ODIN and reset it all to stock? I know this won't lose the unlock, so in the off chance that I did accidentally click on something in there before will the tar.md5 file fix this? I read a post where user sanquante said he had to flash the PDA.MD5 file and it fixed it...I'm assuming he meant the tar.md5? Thanks for ANYONE willing to help. I really could use it.
bump...

Samsung s7 edge 935T t-mobile phone unlocked but at&t network or sim card issue?

I have an edge that is unlocked by tmobile.. in the app, permanent unlock (tmobile unlock app), it says.. "unlock failed" but below says permanently unlocked, unlock approved.. my understanding is this is a normal message.
When i went to the ATT store to test a sim.. they use their live sim, put it in, try to make a phone call but simply said it didnt work, isnt unlocked, which i dont think is right.. issue is i didnt see what if any error message there was.
Is there some step that the att rep should have done to get this on the att network besides putting it in the phone?
Thanks in advance for any info
edit: appears a special sim is needed, at least according to an online rep.. i was told to have them look up the IMEI with the MyCSP tool in the store to determine which sim.

S10 + Sprint Unlocked issue

Hi Everyone,
I just bought a brand new s10+ from marketplace. I ran a full imei report and everything is clean & not blacklisted. It was a sprint phone however the provider I use is consumer cellular (uses ATT towers). When I put my sim card in it obviously said invalid sim and request it get unlocked. I wasnt concerned because I was going to convert it to unlocked anyways via odin like I did my note 9. I reflashed it via odin with the u1 firmware. However the same thing is happening it keeps saying invalid sim and the button for mobile operators is not showing. I have a tmobile sim card and if I put that in it works fine. Being though tmobile and sprint are the same thats why it works fine. I also have a ATT sim card, If i put that in I get the same invalid sim message. So it still appears to be locked somehow. Only sprint / t mobile sim works. I thought by reflashing to unlocked it would unlock the phone sim.
Just to be clear the phone is brand new and never was attached to any account.
Any ideas? I dont know what to do here.
Thanks!!
As I understand, phones that are locked to a network are not just software branded... also the phones hardware ID. So flashing a generic firmware is not enough. You need to get the phone unlocked from the phone's original operator
I found out what I had to do. I had to use a remote unlock service to remove the software lock on the phone. Its fine now. Thanks

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